If I break my fast in Ramadan, how many days do I need to make up?

Short Answer

If you start the day fasting in Ramadan and later break it by eating, drinking, or having intercourse, you must make up one day of fasting and offer a penalty [kaffārah] by fasting for two months straight. However, if you smoked, ejaculated during intimacy, or masturbated, this would break your fast, require one makeup day, but would not require a penalty because they are not entirely like eating, drinking, or intercourse.

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Shaykh Mustafa Umar